The Poplar MYB Transcription Factors, PtrMYB3 and PtrMYB20, are Involved in the Regulation of Secondary Wall Biosynthesis

被引：197

作者：

McCarthy, Ryan L. ^{[1
]}

Zhong, Ruiqin ^{[1
]}

Fowler, Scott ^{[1
]}

Lyskowski, David ^{[1
]}

Piyasena, Hasanthi ^{[1
]}

Carleton, Kara ^{[1
]}

Spicer, Charles ^{[1
]}

Ye, Zheng-Hua ^{[1
]}

机构：

[1] Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA

来源：

PLANT AND CELL PHYSIOLOGY | 2010年 / 51卷 / 06期

基金：

美国国家科学基金会; 美国食品与农业研究所;

关键词：

Populus trichocarpa; Secondary wall; Transcription factor; Transcriptional regulation; GENE-EXPRESSION; DIRECT TARGET; ARABIDOPSIS; SND1; NST1; TISSUES; FIBERS;

D O I：

10.1093/pcp/pcq064

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Dicot wood is mainly composed of cellulose, xylan and lignin, and its formation requires the coordinated regulation of their biosynthesis. In this report, we demonstrate that the poplar wood-associated MYB transcriptional activators, PtrMYB3 and PtrMYB20, activate the biosynthetic pathways of cellulose, xylan and lignin when overexpressed in Arabidopsis and they are also able to activate the promoter activities of poplar wood biosynthetic genes. We also show that PtrMYB3 and PtrMYB20 are functional orthologs of Arabidopsis MYB46 and MYB83, and their expression is directly activated by poplar PtrWND2, suggesting their involvement in the regulation of wood formation in poplar.

引用

页码：1084 / 1090

页数：7

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